Coupling



(No Model.)

W. J. INNIS. Couplings.

No. 232,722. Patented Sept. 28,1880.

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WILLIAM J. INNIS, OF OIL CITY, PENNSYLVANIA.

COUPLING.

SPECIFICATION forming part of Letters Patent No. 232,722, datedSeptember 28,. 1880.

Application filed July 22, 1880.

To all whom it may concern:

Be it known that I, WILLIAM J. INNIS, of Oil City, in the county ofVenango and State of Pennsylvania, have invented certain new and usefulImprovements in Gouplin gs for Oil- IVell Tubing and Anchor; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, which will enable others skilled in the art to whichit appertains to make and use the same, reference being had to theaccompanying drawings, and the letters of reference marked thereon,which form a part of this specification.

My invention relates to improvements in connections between the tubingand anchor in an oil-well.

Oil-wells are tubed with two-inch tubing. Above the oil-bearing rock apacker is placed around the tubing, which causes the and oil from thelower part of the well to ascend through the tubing. That part of thetubing which extends from the packer to the bottom of the well is calledthe anchor, and is generally perforated with small holes in order toallow the oil and gas to pass into the tubin As such perforations cannotbe made large without weakening the anchor, they are made so small asnot to afford as free passage for the oil as is desirable. The anchorshould not only be strong enough to sustain the tubing, but, as itfrequently happens that sand and sediment collect around its bottom, itis liable to part when a strain is applied to withdraw it ifit has beenweakened by too many or too large perforations.

X T's have been used to form the connection between the tubing andanchor; but they are not strong, and the two channels which allow theoil to enter being directly opposite each other, the streams expend aportion of their force upon each other, and thereby diminish the powerby which the oil is forced out of the well.

My improved coupling remedies the defects alluded to, as I securesufficient strength of union between the tubing and anchor, and alsofree passage for the oil. I attain these objects (No model.)

by a coupling, the most desirable form of which is illustrated in theaccompanying drawings.

Figure 1 is a perspective view of my improved coupling, and Fig. 2 is avertical section.

A is a socket, which has the interior screwthread a, to receive thelower end of the tubing. B is a socket with the interior screwthread I),to receive the upper end of the anchor, and these two sockets A and Bare united by the ribs D.

I think it better to add the funnel E, and place the socket A in thesmall end of such funnel, and attach the ribs D to the large endthereof. Such funnel will then collect the oil and by its sloping sidesdirect the currents into the tubing; but it may be omitted, as the mainfeature of my invention is to have the sockets united by ribs sufficientin number to give the needed strength, and so small as to afford noobstacle to the flow of oil.

By thus uniting the sockets A and B by long and narrow ribs D largeareas are secured for the passage of gas and liquid.

What I claim as my invention is-- l. A homogeneous coupling madeindependent of any valve to unite the tubing of an oil-well to itsanchor and allow free and unchecked passage for the oil, said couplingconsisting of a conical funnel at its upper end, with a screw-thread toattach it to the tubing, and its screw-threaded lower end united to saidconical funnel by ribs, substantially as shown and described.

2. A homogeneous coupling for oil well tubing and its anchor, consistingof an upper and lower socket interiorly screw-threaded, an upper portionformed of a conical funnel having unperforated walls, and a lowerportion formed of ribs having radial openings between them,substantially as and for the purpose described.

WILLIAM J. INNIS.

Witnesses:

JAMES C. BOYCE, J. It. ROBERTSON.

